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12 ENGINE 22 REPAIR NOTE: Cylinder head retaining bolts can 34. Lubricate threads of bolts with light oil and fit to positions illustrated. Bolt sizes: M10 x 117mm locations 3, 5, 12, and 13. M12 x 140mm locations 1, 2, 7, 8, 9, 10, 15, 16, 17, M12 x 100mm locations 4, 6, 11, 14. 35. Tighten bolts so that underside of heads just make contact with cylinder head. 36. Following the sequence illustrated tighten all bolts to 40 Nm. 37. Attach degree disc special tool LRT-12-007 to a power bar. 38. Make a suitable pointer from welding rod and attach to a bolt screwed into a rocker shaft 39. Tighten all bolts through 60 ° strictly in sequence illustrated. 40. Repeat 60 ° tightening procedure, again strictly in sequence illustrated. 41. Tighten the ten longer bolts (M12 x 140mm) a further 20 ° , again following the sequence illustrated. NOTE: Repositioning of the pointer will be studs using two nuts. CAUTION: The double tightening one operation, otherwise damage to the cylinder 42. Fit valve stem caps. removed. 44. Fit rocker shaft assembly evenly tightening securing nuts and bolts to correct torque. 45. Fit rocker cover ensuring oil seal is satisfactory for continued use. NOTE: Rocker cover seals can be re-used 46. Secure rocker cover with special seal washers and nuts tightened to correct torque. 47. Refit remainder of items by reversing operations 1 to 22 tightening securing bolts to correct torque |